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Refactoring

This commit is contained in:
Jonas Kulla 2014-01-16 04:19:22 +01:00
parent 91efcfa06d
commit 316457b988
1 changed files with 97 additions and 79 deletions
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176
src/filesystem.cpp
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@ -500,21 +500,20 @@ static const PHYSFS_Archiver RGSS_Archiver =
struct FileSystemPrivate
{
/* All keys are lower case */
/* Maps: lower case filename, To: actual (mixed case) filename.
* This is for compatibility with games that take Windows'
* case insensitivity for granted */
BoostHash<std::string, std::string> pathCache;
bool havePathCache;
std::vector<std::string> extensions[FileSystem::Undefined+1];
// FIXME Need to find a better way to do this..
char pathBuffer[512];
bool havePathCache;
/* Attempt to locate an extension string in a filename.
* Either a pointer into the input string pointing at the
* extension, or null is returned */
const char *findExt(const char *filename)
{
int len;
size_t len;
for (len = strlen(filename); len > 0; --len)
{
@ -528,105 +527,124 @@ struct FileSystemPrivate
return 0;
}
const char *completeFileName(const char *filename,
FileSystem::FileType type,
const char **foundExt)
/* Complete filename via regular physfs lookup */
bool completeFilenameReg(const char *filename,
FileSystem::FileType type,
char *outBuffer,
size_t outN,
const char **foundExt)
{
if (!havePathCache)
/* Try supplementing extensions to find an existing path */
const std::vector<std::string> &extList = extensions[type];
for (size_t i = 0; i < extList.size(); ++i)
{
if (PHYSFS_exists(filename))
const char *ext = extList[i].c_str();
snprintf(outBuffer, outN, "%s.%s", filename, ext);
if (PHYSFS_exists(outBuffer))
{
if (foundExt)
*foundExt = findExt(filename);
*foundExt = ext;
return filename;
return true;
}
const std::vector<std::string> &extList = extensions[type];
for (size_t i = 0; i < extList.size(); ++i)
{
const char *ext = extList[i].c_str();
snprintf(pathBuffer, sizeof(pathBuffer), "%s.%s", filename, ext);
if (PHYSFS_exists(pathBuffer))
{
if (foundExt)
*foundExt = ext;
return pathBuffer;
}
}
// Is this even necessary?
if (foundExt)
*foundExt = 0;
return 0;
}
char buff[512];
size_t i;
for (i = 0; i < sizeof(buff) && filename[i]; ++i)
buff[i] = tolower(filename[i]);
buff[i] = '\0';
std::string key(buff);
/* If the path was already complete,
* we are done at this point */
if (pathCache.contains(key))
/* Doing the check without supplemented extension
* fits the usage pattern of RMXP games */
if (PHYSFS_exists(filename))
{
/* The extension might already be included here,
* so try to find it */
strncpy(outBuffer, filename, outN);
if (foundExt)
*foundExt = findExt(filename);
return pathCache[key].c_str();
return true;
}
char buff2[512];
return false;
}
/* Try supplementing extensions
* to find an existing path */
if (type != FileSystem::Undefined)
/* Complete filename via path cache */
bool completeFilenamePC(const char *filename,
FileSystem::FileType type,
char *outBuffer,
size_t outN,
const char **foundExt)
{
size_t i;
char lowCase[512];
for (i = 0; i < sizeof(lowCase)-1 && filename[i]; ++i)
lowCase[i] = tolower(filename[i]);
lowCase[i] = '\0';
std::string key;
const std::vector<std::string> &extList = extensions[type];
for (size_t i = 0; i < extList.size(); ++i)
{
std::vector<std::string> &extList = extensions[type];
for (size_t i = 0; i < extList.size(); ++i)
const char *ext = extList[i].c_str();
snprintf(outBuffer, outN, "%s.%s", lowCase, ext);
key = outBuffer;
if (pathCache.contains(key))
{
const char *ext = extList[i].c_str();
strncpy(outBuffer, pathCache[key].c_str(), outN);
snprintf(buff2, sizeof(buff2), "%s.%s", buff, ext);
key = buff2;
if (foundExt)
*foundExt = ext;
if (pathCache.contains(key))
{
if (foundExt)
*foundExt = ext;
return pathCache[key].c_str();
}
return true;
}
}
if (foundExt)
*foundExt = 0;
key = lowCase;
return 0;
if (pathCache.contains(key))
{
strncpy(outBuffer, pathCache[key].c_str(), outN);
if (foundExt)
*foundExt = findExt(filename);
return true;
}
return false;
}
PHYSFS_File *openReadInt(const char *filename,
FileSystem::FileType type,
const char **foundExt)
/* Try to complete 'filename' with file extensions
* based on 'type'. If no combination could be found,
* returns false, and 'foundExt' is untouched */
bool completeFileName(const char *filename,
FileSystem::FileType type,
char *outBuffer,
size_t outN,
const char **foundExt)
{
const char *foundName = completeFileName(filename, type, foundExt);
if (havePathCache)
return completeFilenamePC(filename, type, outBuffer, outN, foundExt);
else
return completeFilenameReg(filename, type, outBuffer, outN, foundExt);
}
if (!foundName)
PHYSFS_File *openReadHandle(const char *filename,
FileSystem::FileType type,
const char **foundExt)
{
char found[512];
if (!completeFileName(filename, type, found, sizeof(found), foundExt))
throw Exception(Exception::NoFileError, "%s", filename);
PHYSFS_File *handle = PHYSFS_openRead(foundName);
PHYSFS_File *handle = PHYSFS_openRead(found);
if (!handle)
throw Exception(Exception::PHYSFSError, "PhysFS: %s", PHYSFS_getLastError());
@ -826,7 +844,7 @@ void FileSystem::openRead(SDL_RWops &ops,
bool freeOnClose,
const char **foundExt)
{
PHYSFS_File *handle = p->openReadInt(filename, type, foundExt);
PHYSFS_File *handle = p->openReadHandle(filename, type, foundExt);
ops.size = SDL_RWopsSize;
ops.seek = SDL_RWopsSeek;
@ -844,7 +862,7 @@ void FileSystem::openRead(SDL_RWops &ops,
bool FileSystem::exists(const char *filename, FileType type)
{
const char *foundName = p->completeFileName(filename, type, 0);
char found[512];
return (foundName != 0);
return p->completeFileName(filename, type, found, sizeof(found), 0);
}